Fountain-pen cap



w. P. DE wlTT.

FOUNTAIN PEN CAP Filed March 24, 1925 4 M ay- 4 1926.

vlnlfemea Maw, i926. i' f 1,583,579

WILLIAM 12! DE, WITT, 0F SOMERWHL, INK COMPANY, `oF rC A lvnaltrnoria MASSACHUSETTS, A,Y ooRPoRA'TIN on .MASSA-,w

To all fwjwm 'it' concern: Fig. 2 isa longtudnl Sefcal eflvglo Beit known that I, WILLIAM PEDWIT'I", tion'- of-a"cap`.cons`tructed vin acctrdfaime'vsfitl a eiftizen `of the nited States, residing at my invention. A 1 Y `Somerv11e,=intne' County et Miu'd'lefsexand' Fig-3 isa longtuidnallseetonai elevation 5 State of Massachusetts, have invented n'evv` 4of,a"fmodified form' ofcap. f

Caipsof Which the following a Specifica! other rndified form ofcap.' tion. f l nf v Fig 51A s''afront'elev'i of-'apei casting# This invention relates-'particularly tothe coiistrtlcted in accordance 'vvith my inventionlf' Y cap of a fountain pen. prior to'v the Screw the'ajd h'lvinzgfv been One object of the'A invention iSv to' provide` formed thereon. l 460 a fountain pe'n capvvh-ichlean be inald(jzlleap-`V f Fig. 6 is a front'elevation of the fr'c'nt f ly and* accurately by special machines convportion ofa -perf casing' co'Il-Stlrtfcte-i-i 'ace strueteclv for th'e purpose and which'l Will eoitdance With'my' inveiitien'l;` t Y Y cause' the parts to1 be va(':Cvzurately and rigidly Fig'. F is -ront elevation of acapiniier-' Secured togethertvhen the cap is screwed on shell such as illustrated in llig;y 2iinf'seetifon,; 65

to the casing. I Y but ivitlithescrew'threadoiieitted theiefrein?,L l "The inv'entioncontemplates,together With illustrating'the forni' ofthe in-'nr shell piior' other advantageous' construction',- mali'ng thev to the" formation of the sce'wv tliifead thereo'iif. cap in three parts co'i'npri'singl an inner s'hell, Like numerals refer to li'lfe -parts'thrugh an outer shell andi an intermediate" shell,- thfe out tlielseveral vievvs'ofthe drawings t Y -70 a yinner Shell having'- piefrably formed tliereq In* the'y drawings?, referring to Figfsl and on" an annular flange adapted to engag'ethe 2, 10is` a casing'v for fountain* pen embbdy` front end? of the pen s'ectibn,whif1e"the intering a portion'otf 'my invention and 11' mediate section comprises a s c'brewthreaded' cap" therefor. The 'as'ifnfg'v10embedie`s a? portion intermediate two cylindrical bore lindrlcal front end portion 12, a eyli'ndrial 75 portions? and adapted to engage Screvvbody portin 13 af fruetrofconiealperthreaded portion on the casing` or barrelof tion extending fr'omfline Ato thelineBardf the pen, i connecting thet'vvocylindrical v19101*tibi-ifs; 112- Another object of thejinvention Which iS and 13-to each other.'V The' cylindlriczl pi-*i'f' secured by the construction hereinbefore` settion 12- is of smaller diameter than they cy'5580 forth is that the inner'shellf', Which'iS entirely lin'dical portion 113x Y Y surrounded by the outer Shelli and also the The cylindrical portion 12l is provided" intermediate Shell of the cap, may be made with a? Screwjthr'ead 14 as" Seen"4 i-'n' Fig'. 711, of SomeV cheapg metal that will resist the cor-L. said casing also being preferably` 'tap'retl rosive action of ink, While the outer Shell frointhe'line C tothe rear endth'e're" f. which is made for' ornament', can be`A coni Y penrs'ectionl has aforc'edft at the re f endi structed' of expensive metall, such" asgold or. 16' thereof the front Screw-threaded en'd silver, the result attained being more prac-f oftheca'sing1=0, and Said pens )ectionl has an ticabl'e than if the' Whole' cap Were made of ink Saclr 17 attached to its rear en'd'.' i gold or silver. f ,i Referring to Figi; 2, it Will be seeni 90 The 'invention consists' in the' improved aninner shell 18 is Surrounded by`v an (filter fountain pen capysetV forth inthe following Shel'l 19,fboth of" t'hes'e shel'ls be' Vtii-bilar,f' specification andi particuilarlypointed outin the inner Shell having an annularinvvaif'dly the claims thereof. projecting-fiange'20'thereonfadapted tojabut Referring to the drawings: i i i 4 against l the front outer edge 21 of the pen 95 FigureI 1 iS a longitudi ral Sectional eleva'- Section 15. H tion of my improved fountain pen casing The sh'ell 1 8 Ihas' aP cylindrical frontend and cap, l portion 22 and' a"c`ylindri'c'a`1 intermediate tically casing 10.1

portion 23, both of these portions having al smooth bore and between the portions 22 and 23 the shell 18 is provided with a depressed annular portion 24, see Fig. 7, whichl is screw-threadedV at 25 as illustrated in Fig. 2. The rear end of the outer shell 19 is closed byproviding a. ange 26 thereon which engages and holds in position a disc V27'. The outer shell is preferably formed of rand providing an air tight ychamber 29 in the cap 11 to receive a pen 30. f

The particular class of fountain pen shown in Fig. 1 is of that character in which an ink sack 17 is provided which is oper ated to feed the ink thereinto by any suitable means such as a lever 31. It will be seen that the outer diameter of the cap 11 is practhe same as the outer diameter of the In Fig. 3 .a modified form of cap is illustrated inl which there is embodied an outer shell 32, an inner shell 33 and an intermediate shell 34. yIn this form of-my invention the intermediate shell 34 is substantially the sam-e as the inner shell 23, but the annular flange 20 is omitted therefrom and is replaced by means of an annular kflange 35 on the front end of the shell 33,

otherwise the cap is the same, as the cap illustrated in Fig. 2 .and the functions performed are the same, except that the flange 35 performs the function of the flange 20 in Fig. 2.

In Fig. 4 a modified form of the cap is illustrated in which there is an outer shell 36, an inner shell 37 and an intermediate shell 38. The inner shell 37 has an annular `flange 39 upon its front end formed in a differentwmanner than in the inner shell 33 illustrated in F ig.` 3,V that is, in F ig. 4 the flange 39 is formed by turning the same outwardlyl while in Fig. 3 the flange 35 is formed by turning the flange inwardly. The

operation of and the function performed by the diH-erent parts of the cap 36 are, however,the same as in the form of my invention illustrated in Fig. 3.

In Fig. 6 a portion of the casing is illustrated in its finished form, that is, with the screw thread 14 formed on the front cylindrical end thereof.

In Fig. 7 the form of the inner shell illustrated in its finished shapein Fig. 2 is illustrated for the purpose of illustrating the depressed annular portion 24 located between the two cylindrical smooth bored porytions 22 and 23 and illustrating the appearance of the inner shell, Fig. 2 before the screw thread 25 is' formed thereon.

The manner of using the device hereinbefore described is the same as in other fountain pens, that is, the cap is screwed on to the front end ofthe casing when the pen isk not in use and unscrewed therefrom and placed upon the rear end of the casing when in use.

Iclaim; f Y Y 1. A metal capdfor a fountainpen having, in combination, an inner metal Atubular shell having an interior screw thread for a portion of its length only and a smooth bore in front and at the rear of said screwthreaded portion and an outer tubular metal ed portion and an outer tubular metal shell enclosing said inner" shell and having a straight bore projecting for a substantial distance beyond the open end ofsaid inner shell, one of said shells constituting .a cap.

3. A metal cap for a fountain pen havin in combination, an inner metal tubular she l having an annular depressed portion Vbetween its ends with an interior screw thread thereon and a smooth bore in front of said screw-threaded portion and at the rear of said screw-threaded 'portion and an outerV tubular metal shell enclosing said inner shell and having a straight bore projecting for a substantial distance beyond the open end of said inner shell.

4. A metal cap for a fountain pen havin in combination, an inner metal tubular she l, an intermedia-te metal tubular shell enclosing said inner metal .shell and projecting beyond the front end thereof and having an interior screw thread for a portion of its length only and .an outer tubular metal shell enclosing said intermediate and inner shells and having a straight bore projecting for a substantial distance beyond the open end of said intermediate shell.

5. A metal cap for a fountain pen having, in combination, an inner metal tubular shell terminating at its front end in an .annular flange, an intermediate tubular metal shell enclosing said inner metal shelland projecting beyond the front end thereof and having an interior screw thread for a portion of its length only and an outer tubular metal shell enclosing said inner and intermediate shells and having a straight bore projecting for a substantial distance beyond the open end of said intermediate shell.

6. A metal cap for aifountain pen having,

in combination, an inner metal tubular shell with an annular flange on the front end thereof, an intermediate tubularlnetal shell enclosingv said inner shell and projecting beyond the front end thereof and having an interior screw thread for a portion of its length only and a smooth bore in front of and at therear of said screw-threaded pormy hand. n

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